JP5124370B2 - Image forming apparatus - Google Patents

Description

The present invention relates to an image forming apparatus , and more particularly to an image forming apparatus having a consumable item such as a removable photosensitive member cartridge.

  An image forming apparatus refers to an apparatus that prints an image on a sheet that functions as a print medium, for example, based on an image signal. In such an image forming apparatus, a photosensitive drum charged with a predetermined potential is irradiated with a laser beam, an electrostatic latent image is formed on the outer peripheral surface thereof, and the electrostatic latent image is developed into a visible image with a developer. This is transferred and fixed on a sheet, and an image is printed.

  As disclosed in Korean Patent Publication No. 10-2005-110224, a conventional image forming apparatus includes a main body that forms an appearance, a developing unit that develops an image on paper, and the like. The unit includes, for example, one or more exposure units having a laser diode that generates a laser beam, and a photosensitive cartridge having a photosensitive drum on which an electrostatic latent image is formed by the laser beam emitted from the exposure unit. A charging roller that charges the photosensitive drum, a developing cartridge that develops the electrostatic latent image into a visible image using a developer, a transfer unit that transfers the visible image formed on the photosensitive drum to a sheet, and a transfer unit And a fixing unit for fixing the visible image by heating and pressurizing the visible image.

Korean Patent Publication No. 10-2005-110224

  Consumables such as photoconductor cartridges are detachably installed in the main body, and are replaced when they are used up.The image forming apparatus in which such consumables are detachably installed can be replaced with a vehicle or the like. In the case of carrying by using it, there is a risk that the consumable part may be separated from the fixed position of the main body due to vibration transmitted to the image forming apparatus during the transportation and may be damaged.

  Therefore, conventionally, in the case of packaging for transportation, stuffing or the like is inserted into the main body to prevent the expendables from moving inside the main body of the image forming apparatus. Thereafter, when the image forming apparatus arrives at the use position, the padding is removed. Such a stuffing is not used as a part of an image forming apparatus in operation, but must be manufactured and / or purchased and used as a packing material. The padding must be removed from the body and discarded before use. Therefore, in addition to causing inconvenience to the user, there is a problem in that resources are wasted.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to damage consumables such as a photosensitive cartridge that is detachably installed during transportation of the image forming apparatus. An object of the present invention is to provide a new and improved image forming apparatus capable of reducing the risk.

In order to solve the above problems, according to an aspect of the present invention, a body having a first opening, and consumables installed detachably within said body, mounting et be rotatably on the body, the A door that opens and closes a first opening; a locking member that is mounted on the main body and configured to move in conjunction with the door so as to fix the consumable in a fixed position when the door is closed ; A slide that is movably installed in the main body and is configured to move in conjunction with the door so that the door moves toward the opening when the door is opened and moves away from the opening when the door is closed. A bar, an exposure unit disposed at a lower part of the consumables and having a light window formed on an upper surface thereof, and a first position and a front position installed on the slide bar and covering the light window together with the slide bar. Comprising a optical window cover moves to the second position does not cover the light window, and the locking member, the rotatably installed on the slide bar, between a locked position and the unlocking position together with the slide bar It moves and is in the fixed position when the door is closed, and is in the unlocked position when the door is opened, and is configured to interact with the consumables to prevent the consumables from moving. image forming apparatus is provided, wherein Rukoto is configured to allow the consumable is moved.

  In addition, one end of the slide bar farther from the opening is elastically pressed toward the first opening by the elastic member, and the other end of the slide bar is supported by a pressure bar that is rotatably installed on the door. be able to.

  The locking member may include a pair of locking members that form an angle with each other, and a hinge portion that connects the locking members and is rotatably installed on each slide bar.

  Further, the image forming apparatus engages with any one of the pair of locking members by the backward and forward movements of the slide bar in the first and second directions, so that the locking member rotates. Is further included.

  Further, the engagement protrusions can be formed to protrude from both sides of the cover plate that covers the upper side of the exposure unit.

  The consumable item includes a photosensitive member cartridge including a photosensitive drum having an electrostatic latent image formed on the surface thereof.

  In order to solve the above problems, according to another aspect of the present invention, a main body having a second opening, a paper feed drawer that moves to the inside and outside of the main body through the second opening, There is provided an image forming apparatus comprising: a consumable that is detachably installed; and a locking member that fixes the consumable in a fixed position when the paper feed drawer moves into the main body.

  In addition, a slide bar can be installed in the main body so that the paper feed drawer moves in the first and second directions by moving the paper drawer to the inside and outside of the main body, and the locking member can be rotated to the slide bar. The consumable can be fixed / unfixed by moving the slide bar forward and backward in the first and second directions.

  In addition, one end of the slide bar farther from the second opening is elastically pressed to the second opening side by the elastic member, and the other end of the slide bar is supported by the pressure protrusion protruding from the paper feed drawer. Can do.

In order to solve the above problems, another according to the aspect, a operable image forming apparatus includes a consumable component which is detachably attached, said detachably loaded consumable component of the present invention There limit the inner area of the image forming apparatus including a consumable component mounting position located during an image forming operation of the image forming apparatus also includes a main housing having an opening a user to the interior area so as to access an access door mounted to the main housing so as to open and close the opening, movably mounted in the interior region, to move between an unlocking position and at least a fixed position in conjunction with the access door, in a fixed position when the door is closed, is in the unlocking position when the door is opened, the fixed position, detachably mounted consumable part and interact with the removably Ri Tagged consumable part is configured to prevent movement of the consumable component mounting position, further, in the unlocking position, consumable parts mounted for the detachable to allow the movement from said consumable component mounting position And at least one locking member configured to move in conjunction with the access door. When the door is closed, the door moves in a first direction away from the opening, and when the door is opened, the first door At least one first movable member that moves in a second direction opposite to the direction; and at one end of the at least one first movable member, pressurizing the at least one first movable member to An elastic member configured to move in one direction, a light source configured to irradiate light through a light window, and the at least one first movable Light mounted on a member and configured to move with the at least one first movable member to cover the light window and shield light emitted by the light source when the access door is opened with a window cover, the said at least one locking member, the image forming apparatus is provided, wherein Rukoto rotatably mounted said at least one first movable member.

  According to the present invention, when the door is closed, the consumables such as the photoconductor cartridge are supported and fixed by the locking member, so that the movement of the consumables that may occur during transportation can be prevented by the locking member. As a result, the padding that has been inserted to fix the consumables during transportation can be omitted.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  First, the image forming apparatus according to the first embodiment of the present invention will be described. As shown in FIG. 1, the image forming apparatus according to the present embodiment forms an external appearance and / or an internal region, and houses, encloses and / or supports various components therein, and a print medium such as paper. A paper supply unit 20 for developing the image, a developing unit 30 for developing an image on the paper, a fixing unit 40 for fixing the image to the paper by applying heat and pressure to the paper, and discharging the printed paper to the outside of the main body 10. A paper discharge unit 50 is provided.

  In the present embodiment shown in FIG. 1, the paper feed unit 20 picks up one sheet of paper at a time, for example, from a paper feed drawer 21 having a paper feed tray 21a on which sheets are stacked. A pickup roller 22 and a transfer roller 23 for moving the picked-up paper to the developing unit 30 side are provided.

  The developing unit 30 includes an exposure unit 31 that irradiates a laser beam according to image information, a photosensitive drum 32a on which an electrostatic latent image is formed by the exposure unit 31, and a charging roller 32b that charges the photosensitive drum 32a. A body cartridge 32 is included. A single developer cartridge is sufficient for monochrome printing, i.e. black and white printing. In the present embodiment, the electrostatic latent image formed on the photosensitive drum 32a is visible using a developer having yellow, magenta, cyan, and black colors. Four developing cartridges 33 for developing an image are shown.

  The image forming apparatus according to the present embodiment further includes an intermediate transfer belt 34, a first transfer roller 35, and a second transfer roller 36. Note that consumables such as the photoreceptor cartridge 32 and the developing cartridge 33 are detachably installed in the main body 10 and can be exchanged. In exchange, the first opening 10a of the main body 10 allows access to the internal space formed in the main body 10 and allows the photosensitive cartridge 32 and / or the developing cartridge 33 to be attached to and detached from the main body 10. In addition, the access door 60 which opens and closes the 1st opening 10a is attached to the front side of the main body 10, for example, a lower part rotates with respect to a hinge, for example.

  The exposure unit 31 includes a laser diode (not shown) that emits a laser beam therein, a polygon mirror (not shown) that directs the laser beam from the laser diode toward the photosensitive drum 32a, and the like. An optical window 31a made of a transparent material is formed on the upper surface of the unit 31 so that the laser beam passes from the polygon mirror and is transmitted to the photosensitive drum 32a.

  The fixing unit 40 applies heat and pressure to the paper to fix the visible image on the paper. The fixing unit 40 includes a heating roller 42 having a heat source 41 that applies heat to the paper on which the developer forming the visible image is transferred, and a heating roller. 42, a heating roller 42 and a pressure roller 43 that maintains a constant fixing pressure.

  The paper discharge unit 50 includes a series of paper discharge rollers 51 that are sequentially installed so as to guide the paper that has passed through the fixing unit 40 to the outside of the main body 10.

  As shown in FIG. 2, an optical window opening / closing device 70 is disposed above the optical window 31 a of the exposure unit 31. This is because the optical window 31a of the exposure unit 31 is opened only when the access door 60 is closed, and the laser beam is selectively shielded from the exposure unit 31, so that the user can access the main body when the access door 60 is opened. It is possible to avoid the risk of injury to the user when accessing the 10 internal areas.

  The optical window opening and closing device 70 includes a pair of slide bars 71 that extend in the depth direction of the main body 10 (that is, from the front to the rear) and are arranged on both sides of the optical window 31a. As will be described in detail later, the slide bar 71 moves to the first opening 10a side when the access door 60 opens, and moves to the opposite side, that is, the side away from the first opening 10a when the access door 60 closes. It moves in conjunction with the opening / closing operation of the access door 60. Further, the optical window cover 72 moves together with the slide bar 71 by joining both ends to the slide bar 71. When the access door 60 is opened, the optical window cover 72 is placed on the upper side of the optical window 31a to cover the optical window 31a. When 60 closes, the light window 31a is not covered. The elastic member 73 elastically presses the slide bar 71 toward the first opening 10a.

  The pressure bar 74 is hinged to the access door 60 at one end and aligned with the other end in line with the end of the slide bar 71. When the access door 60 is closed, the slide bar 71 is opened to the first position. Push away from 10a. In other words, the pressure bar 74 transmits a part of the force acting on the access door 60 in the process of closing the access door 60 to the slide bar 71, so that the slide bar 71 moves away from the first opening 10a. Further, on the optical window cover 72, a brush 75 for cleaning the surface of the optical window 31a for cleaning is attached. As a result, the optical window 31 a is cleaned by the brush 75 by opening and closing the access door 60.

  Further, in the image forming apparatus according to the present embodiment, for example, when the access door 60 is closed during transportation of the image forming apparatus, the photosensitive cartridge 32 is fixed in a fixed position so that the photosensitive cartridge 32 is placed in the main body 10. A locking member 76 is provided to prevent movement at the position.

  The locking member 76 is rotatably installed on the slide bar 71, and rotates when the slide bar 71 moves in a direction approaching or moving away from the first opening 10a to fix or release the photoconductor cartridge 32 in a fixed position. It is supposed to be. As shown in FIG. 3, each locking member 76 protrudes outward from both sides at a connecting portion of the locking member 76 a and a pair of locking members 76 a that form a V shape at a predetermined angle, and each slide bar 71. And a hinge part 76b rotatably attached to the arcuate groove formed thereon. The engaging protrusion 31c interacts with the locking member 76 when the slide bar 71 moves in a direction approaching or moving away from the first opening 10a and causes the locking member 76 to rotate, thereby causing the locking member 76 to rotate. The photosensitive member cartridge 32 is fixed in a fixed position or released. Each engaging protrusion 31c engages or interacts with one of the pair of locking members 76a to rotate the locking member 76. In the present embodiment, the engaging protrusions 31 c are formed to protrude from both ends of the cover plate 31 b that covers the upper part of the exposure unit 31 and forms the upper surface of the exposure unit 31.

  The operation of the image forming apparatus configured as described above will be described in detail as follows.

  First, when the access door 60 is closed, part of the force that acts to close the access door 60 is transmitted to the slide bar 71 through the pressure bar 74, and the slide bar 71 pressurizes or deforms the elastic member 73. Move away from one opening 10a. At this time, the optical window cover 72 coupled to the slide bar 71 exposes the optical window 31a while moving in the same direction as the moving direction of the slide bar 71, and a laser beam from the exposure unit 31 passes through the optical window 31a. 32a is irradiated. At this time, the locking member 76 also moves in the direction away from the first opening 10a together with the slide bar 71, and the locking member 76a that is close to the first opening 10a of the pair of locking members 76a is engaged. It interacts with the mating protrusion 31c and rotates to the horizontal extending position shown in FIG. 3, and the remaining locking member 76a extends vertically to support and fix the photoreceptor cartridge 32 in place. Therefore, for example, even if there is a possibility of vibration during the transportation of the image forming apparatus, the photosensitive cartridge 32 is maintained firmly fixed in place by the locking member 76, so that the photosensitive cartridge 32 is the main body. Damage that can occur from moving within 10 can be prevented.

  Next, as shown in FIG. 4, when the access door 60 is opened, the force transmitted to the slide bar 71 via the pressure bar 74 is released, so that the elastic member 73 is attached as shown in FIG. The slide bar 71 moves to the first opening 10a side by the force. Therefore, the light window cover 72 installed on the slide bar 71 covers the light window 31 a and prevents the laser beam generated by the exposure unit 31 from traveling beyond the light window cover 72. The brush 75 attached to the optical window cover 72 sweeps the surface of the optical window 31a and removes foreign matters such as dust and toner particles attached to the upper surface of the optical window 31a from the upper surface of the optical window 31a. Further, in the process in which the slide bar 71 moves toward the first opening 10a, as shown in FIG. 6, the locking member 76 positioned relatively far from the first opening 10a is detached from the photoconductor cartridge 32, and the photoconductor The fixing of the cartridge 32 is released, so that the photosensitive cartridge 32 can be separated from the main body 10. The locking member 76 positioned relatively far from the first opening 10a engages with the engaging protrusion 31c in such a manner that it does not interact with the separated photosensitive member cartridge.

  FIG. 7 shows an image forming apparatus according to another embodiment of the present invention. In the image forming apparatus according to the present embodiment, the second opening 10 b is attached to the front surface of the main body 10, and the paper feed drawer 21 can move to the inside and the outside of the main body 10 through the second opening 10 b. Yes.

  In the image forming apparatus according to the present embodiment, the paper supply drawer 21 moves inward and outward of the main body 10, thereby fixing and unfixing consumables such as the photoconductor cartridge 32 installed in the main body 10. be able to.

  According to the present embodiment, the slide bar 71 moves in a direction away from or closer to the second opening 10 b in conjunction with the movement of the paper feed drawer 21 toward the inside and outside of the main body 10. As in the previous embodiment, the locking member 76 installed on the slide bar 71 rotates when the slide bar 71 moves and the consumable is fixed or released in place. As described above, one end of the slide bar 71 is elastically pressed toward the second opening 10b by the elastic member 73, and the other end of the slide bar 71 is formed to protrude upward from the paper feed drawer 21. Aligned to interact with the pressure protrusion 21b.

  Similar to the embodiment described above with reference to FIGS. 1-6, each locking member 76 includes a pair of locking members 76a that form a V-shape at a predetermined angle, and a locking member 76a. And a hinge portion 76b that protrudes outward from both sides at the connecting portion and is rotatably attached to an arc-shaped groove formed on each slide bar 71. In the present embodiment, the engagement protrusion 31c is disposed on the main body 10 and protrudes to the inside of the main body 10, and engages with either one of the pair of locking members 76a, so that the locking member 76 rotates. To do.

  Therefore, when the paper feed drawer 21 moves to the inside of the main body 10 through the second opening 10b, a part of the force acting to move the paper feed drawer 21 is applied to the slide bar 71 via the pressure protrusion 21b. Accordingly, the slide bar 71 moves in a direction away from the second opening 10b while the elastic member 73 is elastically deformed. As the slide bar 71 continues to move away from the second opening 10b, the locking member 76a formed closer to the second opening 10b engages with the engaging protrusion 31c to rotate the locking member 76. On the other hand, the locking member 76a formed farther from the second opening 10b supports and fixes the photoreceptor cartridge 32 in a fixed position.

  On the other hand, as shown in FIG. 8, when the paper feed drawer 21 moves to the outside of the main body 10 through the second opening 10b, the force applied to the slide bar 71 via the pressure protrusion 21b is released, and accordingly The slide bar 71 moves to the second opening 10b side by the elastic restoring force of the elastic member 73. When the slide bar 71 continues to move toward the second opening 10b, the locking member 76a formed farther from the second opening 10b is detached from the photosensitive cartridge 32, and the fixing of the photosensitive cartridge 32 is released. As a result, the photoconductor cartridge 32 becomes separable from the main body 10.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

1 is a cross-sectional view illustrating an image forming apparatus according to an embodiment of the present invention, showing a state where a door is closed. FIG. 2 is a perspective view showing an optical window opening and closing device in a state where a door is closed in the image forming apparatus of FIG. 1. It is an enlarged view of the III part shown in FIG. It is sectional drawing which shows the image forming apparatus of FIG. 1, and shows the state in which the door is open. FIG. 2 is a perspective view showing an optical window opening and closing device in a state where a door is open in the image forming apparatus of FIG. 1. It is an enlarged view of VI part shown in FIG. FIG. 6 is a cross-sectional view showing an image forming apparatus according to another embodiment of the present invention, and shows the operation of the image forming apparatus. FIG. 6 is a cross-sectional view showing an image forming apparatus according to another embodiment of the present invention, and shows the operation of the image forming apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body 10a 1st opening 10b 2nd opening 20 Paper feed unit 21 Paper feed drawer 21a Paper feed tray 21b Pressure protrusion 30 Developing unit 31 Exposure unit 31a Light window 31b Cover plate 31c Engagement protrusion 40 Fixing unit 50 Paper discharge unit 60 Access door 70 Optical window opening and closing device 71 Slide bar 72 Optical window cover 73 Elastic member 74 Pressure bar 75 Brush 76 Locking member 76a Locking member 76b Hinge part

Claims (17)

A body having a first opening;
Consumables detachably installed in the main body,
A door rotatably attached to the main body and opening and closing the first opening;
A locking member mounted on the body and configured to move in conjunction with the door to lock the consumable in place when the door is closed;
It is movably installed in the main body, and is configured to move in conjunction with the door so that it moves to the opening side when the door is opened and moves away from the opening when the door is closed. A slide bar,
An exposure unit disposed at the bottom of the consumables and having an optical window formed on the top surface;
A light window cover that is installed on the slide bar and moves together with the slide bar to a first position that covers the light window and a second position that does not cover the light window ;
The locking member is rotatably installed on the slide bar, moves together with the slide bar between a fixed position and a fixed release position, is in a fixed position when the door is closed, and is fixed when the door is opened. There the release position, is configured to prevent the consumables and interact with consumables moves further, it characterized Rukoto is configured to allow the consumable is moved in the unlocking position Image forming apparatus. The first end of the slide bar is elastically pressed toward the opening by an elastic member, and the second end of the slide bar is supported by a pressure bar attached to the door. the image forming apparatus according to claim 1 shall be the features. The locking member, the are connected by a hinge portion rotatably installed on the slide bar, the image forming apparatus according to claim 1 characterized in that it comprises a pair of locking members which form an angle to each other. Positioned to interact with any one of the pair of locking members when the slide bar is moved in a direction approaching or moving away from the opening, and the locking member is rotated. the image forming apparatus according to claim 3 you further comprising an engaging protrusion to be. The engaging projection is an image forming apparatus according to claim 1 you, comprising the engaging projections of a pair of protruding from both sides of the cover plate for covering the upper side of the exposure unit. The consumables, the image forming apparatus according to claim 1 you comprising a photosensitive member cartridge having a photosensitive drum on which an electrostatic latent image is formed on the surface. A body having a second opening;
A paper feed drawer that is movably installed in the main body and moves inside and outside the main body through the second opening;
Consumables detachably installed in the main body,
A locking member mounted in the main body and configured to move in conjunction with the paper feed drawer so as to fix the consumable in a fixed position when the paper feed drawer moves to the inside of the main body. When the image forming apparatus you comprising: a. It is movably installed on the main body, and moves to the second opening side when the paper feed drawer moves into the main body, and moves away from the second opening when the main body moves outside the main body. A slide bar configured to move in conjunction with the paper feed drawer ,
The locking member is rotatably installed on the slide bar, moves together with the slide bar between a fixed position and a fixed release position, and becomes a fixed position when the paper feed drawer is in the main body, When a part of the paper feed drawer is outside the main body, it is in a fixed release position and is configured to interact with the consumable to prevent the consumable from moving. the image forming apparatus according to claim 7 you, characterized in that it is configured to allow the movement. The first end of the slide bar is elastically pressed toward the opening by an elastic member, and the second end of the slide bar is supported by a pressure protrusion protruding from the paper feed drawer. the image forming apparatus according to claim 8 characterized. The locking member, the are connected by a hinge portion rotatably installed on the slide bar, the image forming apparatus according to claim 8 characterized in that it comprises a pair of locking members which form an angle to each other. The locking member is disposed in the main body and is positioned so as to interact with any one of the pair of locking members by moving the slide bar toward or away from the second opening. the image forming apparatus according to claim 10 you further comprising an engaging protrusion to be. The consumables, the image forming apparatus according to claim 7 you comprising a photosensitive member cartridge having a photosensitive drum on which an electrostatic latent image is formed on the surface. An image forming apparatus operable with a detachably attached consumable part,
An internal region of the image forming apparatus including a consumable component mounting position where the detachably mounted consumable component is positioned during an image forming operation of the image forming apparatus is limited, and a user can access the internal region. A main housing having an opening in the
An access door attached to the main housing to open and close the opening;
It is movably attached to the internal region and moves in conjunction with the access door at least between a fixed position and a fixed release position, and is in a fixed position when the door is closed and in a fixed release position when the door is opened. And is configured to interact with the detachably attached consumable part in the fixed position to prevent the detachably attached consumable part from moving from the consumable part mounting position; And at least one locking member configured to allow the detachably mounted consumable component to move from the consumable component mounting position;
It is configured to move in conjunction with the access door, and moves in a first direction away from the opening when the door is closed, and moves in a second direction opposite to the first direction when the door is opened. Two first movable members;
An elastic member disposed at one end of the at least one first movable member and configured to pressurize and move the at least one first movable member in the first direction;
A light source configured to emit light through a light window;
Mounted on the at least one first movable member, moves with the at least one first movable member to cover the light window, and emits light irradiated by the light source when the access door is opened. A light window cover configured to shield ,
It said at least one locking member, at least rotatably mounted to one of the first movable member imaging apparatus you said Rukoto. The at least one locking member includes a pair of arms extending at an angle to form a V-shape, and the pair of arms rotates with respect to a rotation shaft located at a portion of the locking member that is coupled to each other. In the fixed position, at least one of the pair of arms extends perpendicularly to a movement path of the detachably attached consumable part and comes into contact with the detachably attached consumable part Is rotated so as to prevent the consumable parts from moving from the mounting position, and in the fixed release position, none of the pair of arms is rotated so as to extend in the movement path of the detachably mounted consumable parts. the image forming apparatus according to claim 13 you characterized by. Disposed in said optical window cover in contact with the optical window, wherein you further comprising a cleaning brush for brushing the light window when the light window cover is moved to said first and second directions Item 14. The image forming apparatus according to Item 13 . The opening comprises an access opening that allows a user access to a location within the internal region where the removably mounted consumable part is accessible;
The access door has at least one pressure bar hinged to the main housing so as to swing open and close, and configured to contact the at least one first movable member; wherein when pivoted closed position from the access door is opened position, the image forming apparatus according to the at least one first movable member to claim 13 it said pushing in the first direction. A paper feed drawer having a storage area for holding paper inside;
The opening consists of a paper feed drawer opening corresponding to the paper feed drawer installed in the internal region,
The access door is composed of at least a part of the paper feed drawer, and the paper feed drawer is configured to slide inward and outward of the internal region through the paper feed drawer opening, and the paper feed drawer may be a part. When located outside the internal region, the access door is in an open position, and the paper feed drawer is formed to project upward from the top of the paper feed drawer, and is in contact with the first movable member. drawer image forming apparatus according to claim 13 characterized in that it has at least one pressing protrusion pressing the at least one first movable member when sliding in the interior region in the first direction.

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